Smart card and anti-skimming system including the same

Abstract

A smart card includes a first integrated circuit (IC) chip and a second IC chip. The first IC chip receives a read signal from an external read device, and is responsive to the read signal to output a data signal to the external read device based on information data stored in a memory. The second IC chip receives the read signal from the external read device, and is responsive to the read signal to output an anti-skimming signal. The anti-skimming signal interferes with the data signal when both the first and second IC chips are in a read zone of the read device.

1. A smart card, comprising:
 a first integrated circuit (IC) chip which receives a read signal from an external read device, and which is responsive to the read signal to output a data signal to the external read device based on information data stored in a memory; 
 a second IC chip which receives the read signal from the external read device, and which is responsive to the read signal to output an anti-skimming signal; 
 a foldable structure including a plurality of pages, wherein the first and second IC chips are located at different pages of the foldable structure; 
 a first structure which includes the first IC chip; and 
 a second structure which includes the second IC chip, 
 wherein a relative position between the first and second IC chips is variable, 
 wherein the first structure is movable relative to the second structure, 
 wherein the anti-skimming signal interferes with the data signal when both the first and second IC chips are in a read zone of the read device, and 
 wherein the second structure is a casing for receiving the first structure. 
 
     
     
       2. The smart card of  claim 1 , wherein a transmission frequency of the data signal is substantially the same as a transmission frequency of the anti-skimming signal. 
     
     
       3. The smart card of  claim 1 , wherein the data signal is generated by load modulating the read signal according to the information data. 
     
     
       4. The smart card of  claim 1 , wherein the anti-skimming signal is generated by load modulating the read signal. 
     
     
       5. The smart card of  claim 1 , wherein the second IC chip comprises a memory storing a random number data, and wherein the second IC chip converts the read signal to the anti-skimming signal based on the random number data stored in the memory. 
     
     
       6. The smart card of  claim 5 , wherein the random number data is a reverse data of the information data stored in the memory of the first IC chip. 
     
     
       7. The smart card of  claim 5 , wherein the anti-skimming signal is generated by load modulating the read signal according to the random number data. 
     
     
       8. A smart card, comprising:
 a first integrated circuit (IC) chip which receives a read signal from an external read device, and which is responsive to the read signal to output a data signal to the external read device based on information data stored in a memory; and 
 a second IC chip which receives the read signal from the external read device, and which is responsive to the read signal to output an anti-skimming signal, 
 wherein the anti-skimming signal interferes with the data signal when both the first and second IC chips are in a read zone of the read device, 
 wherein the second IC chip comprises a memory storing a random number data, and wherein the second IC chip converts the read signal to the anti-skimming signal based on the random number data stored in the memory. 
 
     
     
       9. The smart card of  claim 8 , wherein a relative position between the first and second IC chips is variable. 
     
     
       10. The smart card of  claim 9 , further comprising a foldable structure including a plurality of pages, wherein the first and second IC chips are located at different pages of the foldable structure. 
     
     
       11. The smart card of  claim 10 , wherein the foldable structure is a passport. 
     
     
       12. The smart card of  claim 9 , further comprising a first structure which includes the first IC chip and a second structure which includes the second IC chip, wherein the first structure is movable relative to the second structure. 
     
     
       13. The smart card of  claim 8 , wherein the random number data is a reverse data of the information data stored in the memory of the first IC chip. 
     
     
       14. The smart card of  claim 8 , wherein the anti-skimming signal is generated by load modulating the read signal according to the random number data. 
     
     
       15. The smart card of  claim 8 , further comprising:
 a first structure which includes the first IC chip; and 
 a second structure which includes the second IC chip, 
 wherein the second structure is a casing configured to receive and enclose the first structure such that the first structure is slidably removable from the second structure.